Finding the Fourth Proportional to 5,200.10, 7,175.30 and 3,211.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.10 : 7,175.30 = 3,211.30 : x
2. Step 2: Convert to fraction form
   5,200.10/7,175.30 = 3,211.30/x
3. Step 3: Cross multiply
   5,200.10x = 7,175.30 × 3,211.30
4. Step 4: Simplify right side
   5,200.10x = 23,042,040.89
5. Step 5: Solve for x
   x = 23,042,040.89/5,200.10
6. Step 6: Final answer
   x = 4,431.08